Explanation:
move queen a6 and wait for white's nxt move
Everything is correct except aren't you supposed to start fresh with each note? Like, you have 3 4 under some of them. Don't you have to do 1 2, or, like I said, start fresh, with the number 1 each time? (I am not sure, I am just asking. If not, then don't pay attention to my comments :)
Otherwise, everything is perfect.
I believe the answer is Post and lintel construction. (Columns).
I don’t think domes were invented.
Flying buttresses were invented for the Notre Dame Cathedral in France
Towers and spires are not likely.
I hope this helps!